[IMP] hr_recruitment: Avoid partner duplication

Use the application form partner as work contact when converting him into
and employee.

Use the employee work contact as user partner on user creation.

The goal is to have only 1 partner over the whole recruitment process
flow, instead of three, thus reducing the confusion for end users who
don't really know who to choose.

TaskID: 3101400

addons/hr/models/hr_employee.py

@@ -193,6 +193,7 @@ class HrEmployeePrivate(models.Model):
                 'default_phone': self.work_phone,
                 'default_mobile': self.mobile_phone,
                 'default_login': self.work_email,
+                'default_partner_id': self.work_contact_id.id,
             })
         }
 

addons/hr_recruitment/models/hr_applicant.py

@@ -586,6 +586,7 @@ class Applicant(models.Model):
         address_sudo = self.env['res.partner'].sudo().browse(address_id)
         return {
             'name': self.partner_name or self.partner_id.display_name,
+            'work_contact_id': self.partner_id.id,
             'job_id': self.job_id.id,
             'job_title': self.job_id.name,
             'private_street': address_sudo.street,